title: Non-Hodgkin's lymphoma presenting as knee monoarthritis with a popliteal cyst.
authors.forename: K K
authors.initials: KK
authors.lastname: Haase
authors.forename: H
authors.initials: H
authors.lastname: Dürk
authors.forename: A
authors.initials: A
authors.lastname: Baumbach
authors.forename: J
authors.initials: J
authors.lastname: Saal
authors.forename: M
authors.initials: M
authors.lastname: Wehrmann
mesh_terms: D001168:Arthritis / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007719:Knee Joint; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D011151:Popliteal Cyst / Q000150:complications / Q000175:diagnosis* / Q000473:pathology